I had the "unrecognized disc" issue for about a year and finally fixed it for $15. : r/PS4
Disc Stuck in PS4? Here Is How to Manually Eject a Disc from PS4
FIXED] PS4 Unrecognised Disc Error | Yoodley
If Your PS4 Unrecognized Disc, Use these Methods to Fix It
PS4 PRO "UNRECOGNIZED DISK" - NEW LASER - NEW DISC DRIVE - NEW RIBBON CABLES - VERIFIED CABLE SEATING - GOOD F6202 F6201 FUSES PLEAS HELP HOMIES! : r/consolerepair
HELP! I think my PS4 Pro Drive is Dying! - PS3 and PS4 - Cheap Ass Gamer
Does PS4 (Pro) Play Blu-ray? Yes, It Does, and Here Are 2 Ways
SOLVED: ps4 wont read disc, just spinning and stops SOLVED! - PlayStation 4 - iFixit